26009993 has 8 divisors (see below), whose sum is σ = 27434400. Its totient is φ = 24591168.

The previous prime is 26009989. The next prime is 26010007. The reversal of 26009993 is 39990062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26009993 - 2² = 26009989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26009933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11153 + ... + 13281.

It is an arithmetic number, because the mean of its divisors is an integer number (3429300).

Almost surely, 2^26009993 is an apocalyptic number.

It is an amenable number.

26009993 is a deficient number, since it is larger than the sum of its proper divisors (1424407).

26009993 is a wasteful number, since it uses less digits than its factorization.

26009993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 26009993 is about 5099.9993137254. Note that the first 3 decimals coincide. The cubic root of 26009993 is about 296.2875561116.

The spelling of 26009993 in words is "twenty-six million, nine thousand, nine hundred ninety-three".